278313681

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{761}}^1$

素因数の和:953

約数の個数: 32

約数和(自身を含む): 402921216

約数和(自身を除く): 124607535

約数列:

[1, 3, 17, 51, 71, 101, 213, 303, 761, 1207, 1717, 2283, 3621, 5151, 7171, 12937, 21513, 38811, 54031, 76861, 121907, 162093, 230583, 365721, 918527, 1306637, 2755581, 3919911, 5457131, 16371393, 92771227, 278313681]

約数ペア:

[(1, 278313681), (3, 92771227), (17, 16371393), (51, 5457131), (71, 3919911), (101, 2755581), (213, 1306637), (303, 918527), (761, 365721), (1207, 230583), (1717, 162093), (2283, 121907), (3621, 76861), (5151, 54031), (7171, 38811), (12937, 21513)]